P2_GEPARD_installer manual_ work basis_EN_02 - 03/10 - protherm
- 15 -
INSTALATION
double chimney never has terminal elements — the same as
with pipes that vent into open areas!
Both components of the route — external (air) and internal
(exhaust gas) — must safely feed into the relevant chimney
duct but not protrude so deeply that they create blockages in
the exhaust or air ducts.
Length of fume ducting (23 MTV):
60 / 100: min. 0.3 m (with one 90° joint), max. 3 m (with one -
90° joint). If the total fume ducting length is more than 0.5 m,
the diffuser with a diameter of 39 mm must be removed.
The C7.2.5
52
method (MTV)
Separate double piping and venting into different areas (with
different parameters, mainly of pressure)
For venting exhaust and bringing in air for combustion, separate
piping may be used. The separate piping may not be routed on
opposing walls of the building.
Length of fume ducting (23 MTV):
80 / 80: min. 2 x 0.5 m, max. 2 x 18 m. If the total fume -
ducting length is more than 2 x 2 m, the diffuser with a
diameter of 39 mm must be removed.
The C7.2.6
82
method (MTV)
Using piping in cases where the air is drawn in from an open
area and the exhaust vents into a shared chimney.
Length of fume ducting (23 MTV):
80 / 80: min. 2 x 0.5 m, max. 2 x 18 m. If the total fume -
ducting length is more than 2 x 2 m, the diffuser with a
diameter of 39 mm must be removed.
Air may in the same way be brought in from an open space (or
a space well supplied with air) and exhaust extracted into a
common chimney (or, again, into a space with common venting
of exhaust gases). The special case of B
22
also belongs in this
category. (See following text.)
The B7.2.7
22
method (MTV)
Extraction of exhaust (also in separate piping) into an open
area and intake of combustion air from an internal space in the
building in close proximity to the boiler (in coaxial piping with the
perforation of its outer part).
Length of fume ducting (23 MTV):
80 / 80: min. 2 m, max. 2 m. The diffuser must be removed. -
When drawing in air for combustion from internal areas of the
building, a suffi cient quantity of that air must be ensured. No
other appliance may be connected to the exhaust duct (whether
chimney or pipe), and when drawing in air at least 1.2 m3 of air/
hour per kW of boiler output must be available.
To Next Page
Loading...
